<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>
        .ssday{
            color: #ff0000;
            text-align: center;
        }
        .td{
            text-align: center;
        }
        .th{
            width: 60px;
        }
    </style>
</head>
<body>

<div>
    <table>
        <tdead>
        <span>2018-03日历</span>
        <tr>
            <th class="th">周日</th>
            <th class="th">周一</th>
            <th class="th">周二</th>
            <th class="th">周三</th>
            <th class="th">周四</th>
            <th class="th">周五</th>
            <th class="th">周六</th>
        </tr>
        </tdead>
        <tbody>
        <tr>
            <td class="ssday"></td>
            <td class="td"></td>
            <td class="td"></td>
            <td class="td"></td>
            <td class="td" onclick="selectTd()">1</td>
            <td class="td">2</td>
            <td class="ssday">3</td>
        </tr>
        <tr>
            <td class="ssday">4</td>
            <td class="td">5</td>
            <td class="td">6</td>
            <td class="td">7</td>
            <td class="td">8</td>
            <td class="td">9</td>
            <td class="ssday">10</td>
        </tr>
        <tr>
            <td class="ssday">11</td>
            <td class="td">12</td>
            <td class="td">13</td>
            <td class="td">14</td>
            <td class="td">15</td>
            <td class="td">16</td>
            <td class="ssday">17</td>
        </tr>
        <tr>
            <td class="ssday">18</td>
            <td class="td">19</td>
            <td class="td">20</td>
            <td class="td">21</td>
            <td class="td">22</td>
            <td class="td">23</td>
            <td class="ssday">24</td>
        </tr>
        <tr>
            <td class="ssday">25</td>
            <td class="td">26</td>
            <td class="td">27</td>
            <td class="td">28</td>
            <td class="td">29</td>
            <td class="td">30</td>
            <td class="ssday">31</td>
        </tr>
        </tbody>
    </table>
</div>

<script src="https://file.ggxqce.com/web/jquery-2.2.3.min.js"></script>

</body>
</html>